[Fix] trl doc build

[mishig25]

Problem

Page https://huggingface.co/docs/trl/v0.7.1/en/ddpo_trainer was failing with:

node:internal/event_target:1083
  process.nextTick(() => { throw err; });
                           ^
Error: 500 /docs/trl/main/en/ddpo_trainer

Solution

Setting sveltekit.prerender.handleHttpError option from fail to warn solves the issue. Need a better fix. I'm not exactly sure why this error is happening at the moment. Tested the new builds locally to make sure of correctness.

[mishig25]

Although https://huggingface.co/docs/trl/main/en/ddpo_trainer built fine with 500 http error, other pages such as https://huggingface.co/docs/text-generation-inference/basic_tutorials/launcher is giving 404. Therefore, I'm gonna revert this change and work on better solution